Eftersom mitt nya stora bygge har dubbla motorer på ena axeln, så fick jag en drivare extra. Pluss en i reserv.
Jojje kanske får konkurrens, enkla Geckodrives för 29$ på
Senaste infon om G250 (den enkla, utan kontakter (man måste ha ett BOK) och kylare):
Quick update:
1) We ordered 2,000 new G250 boards and 2,000 new G251 boards last week. They are on a 4-week turn, so we won't see any until late July. The pricing was not advantageous at all for a 2-week turnaround. That's the bad news.
2) More bad news. 3 additional board layout circuit trace errors were identified, bringing the total up to 5.
3) Now for some good news: We found a way to correct what initially seemed like fatal errors on the boards we have in house. We also found the corrections take 6 minutes and 40 seconds to reverse the errors. The actual correction takes 5 minutes, leaving 1 minute, 40 seconds for butt-scratching and nose-picking.
Seriously, this is the necessary reflex or relaxation time a technician needs to stay sharp a full 8 hours at a task like this. It is not humanly possible otherwise.
These corrections have been tested to every published specification limit of the drive and the corrected drives meet and exceed these specifications. It was expected because my layout screw-ups were entirely restricted to the logic portion of the drive. It did not involve the far more critical power section.
4) The result: These drives have 4 very small, blue-colored insulation wiring (#30 gage wire) corrections. They restore the boards to what they should have been had I not screwed up, with absolutely no compromise to their performance or reliability.
We have 2 technicians assigned to these corrections as of yesterday. It took that long to find a solution. Between them, they can correct about 150 drives a day. Once we have a stockpile of 500+ corrected and tested drives, we will offer them for sale.
5) We said the G250 will be $29 drive. The G250s will be $29 drives for two weeks as an introductory price. This will happen sometime next week or at the worst, the week after should we run into unexpected problems.
6) Tune out here if you like, what follows is analysis:
The G250 is a very dangerous product for us. To sell at $29 requires everything in the manufacturing process to work exactly right because there is no margin at all for production process errors. I have never designed a product before whose price couldn't absorb teething problems.
The $29 price guarantees huge production volumes; one mistake in miscalculating production process costs also guarantees huge losses to the company. That means we have to have a certainty everything involved with production is under control from parts procurement to shipping.
The G250 is identical to a G201 set to 3.5A and 50VDC at 1/3 the price. This is scary should something go wrong with the cost estimates. The G201 has a healthy price buffer built into it to account for support and development, the G250 has no fat at all.
It costs the same to process a single G201 order and ship it as it will to process and ship a single G250. For that reason the G250 will have a much steeper price vs. quantity schedule. What we have arrived at is this:
Qty 1 G250, $61
Qty 12 G250, $51
Qty 96 G250, $41
Qty 1008 G250, $31
Notice the funny quantity numbers. They are divisible by 12. We build the drives in panels of 12 and we want to sell them that way. You buy 12 drives and you get shipped a single panel of 12 drives. The panels are V-scored and you break them into individual drives like a saltine cracker. You buy 96 and you get 8 vacuum-sealed panels of 12 drives per panel. We tried to ship individual drives in a bag but they scraped parts off of each other 3 separate times; it didn't work. As vacuum-sealed plastic bagged panels of 12 it works perfectly.
Most of you here may see it as "I need only 3 drives. What's with the 12, 96 and 1008 quantities?" Others of you here are resellers and distributors. You see the price structure as guaranteeing a lot of leeway how you price the drives. You buy them at $31, you have a lot of latitude on how you resell them. We very simply will not be able to sell them directly in small quantities and hope to make a profit. That is why we will have the steep sliding price structure.
Before we ever committed to turning out these drives we had to have some assurances from major clients. The assurances given require we turn out 100,000 G250 drives in the next 12 months. That is what I mean when I said it's scary.
Mariss
Om man räkna att dollarn står i 6:-, så blir det 366:-/st + ev. moms + frakt som går på ca 180:-.
Så totalt blir det minst 1278:- + moms och BOK.
Quick update:
1) We ordered 2,000 new G250 boards and 2,000 new G251 boards last week. They are on a 4-week turn, so we won't see any until late July. The pricing was not advantageous at all for a 2-week turnaround. That's the bad news.
2) More bad news. 3 additional board layout circuit trace errors were identified, bringing the total up to 5.
3) Now for some good news: We found a way to correct what initially seemed like fatal errors on the boards we have in house. We also found the corrections take 6 minutes and 40 seconds to reverse the errors. The actual correction takes 5 minutes, leaving 1 minute, 40 seconds for butt-scratching and nose-picking.
Seriously, this is the necessary reflex or relaxation time a technician needs to stay sharp a full 8 hours at a task like this. It is not humanly possible otherwise.These corrections have been tested to every published specification limit of the drive and the corrected drives meet and exceed these specifications. It was expected because my layout screw-ups were entirely restricted to the logic portion of the drive. It did not involve the far more critical power section.
4) The result: These drives have 4 very small, blue-colored insulation wiring (#30 gage wire) corrections. They restore the boards to what they should have been had I not screwed up, with absolutely no compromise to their performance or reliability.
We have 2 technicians assigned to these corrections as of yesterday. It took that long to find a solution. Between them, they can correct about 150 drives a day. Once we have a stockpile of 500+ corrected and tested drives, we will offer them for sale.
5) We said the G250 will be $29 drive. The G250s will be $29 drives for two weeks as an introductory price. This will happen sometime next week or at the worst, the week after should we run into unexpected problems.
6) Tune out here if you like, what follows is analysis:
The G250 is a very dangerous product for us. To sell at $29 requires everything in the manufacturing process to work exactly right because there is no margin at all for production process errors. I have never designed a product before whose price couldn't absorb teething problems.
The $29 price guarantees huge production volumes; one mistake in miscalculating production process costs also guarantees huge losses to the company. That means we have to have a certainty everything involved with production is under control from parts procurement to shipping.
The G250 is identical to a G201 set to 3.5A and 50VDC at 1/3 the price. This is scary should something go wrong with the cost estimates. The G201 has a healthy price buffer built into it to account for support and development, the G250 has no fat at all.
It costs the same to process a single G201 order and ship it as it will to process and ship a single G250. For that reason the G250 will have a much steeper price vs. quantity schedule. What we have arrived at is this:
Qty 1 G250, $61
Qty 12 G250, $51
Qty 96 G250, $41
Qty 1008 G250, $31
Notice the funny quantity numbers. They are divisible by 12. We build the drives in panels of 12 and we want to sell them that way. You buy 12 drives and you get shipped a single panel of 12 drives. The panels are V-scored and you break them into individual drives like a saltine cracker. You buy 96 and you get 8 vacuum-sealed panels of 12 drives per panel. We tried to ship individual drives in a bag but they scraped parts off of each other 3 separate times; it didn't work. As vacuum-sealed plastic bagged panels of 12 it works perfectly.
Most of you here may see it as "I need only 3 drives. What's with the 12, 96 and 1008 quantities?" Others of you here are resellers and distributors. You see the price structure as guaranteeing a lot of leeway how you price the drives. You buy them at $31, you have a lot of latitude on how you resell them. We very simply will not be able to sell them directly in small quantities and hope to make a profit. That is why we will have the steep sliding price structure.
Before we ever committed to turning out these drives we had to have some assurances from major clients. The assurances given require we turn out 100,000 G250 drives in the next 12 months. That is what I mean when I said it's scary.
Mariss
Om man räkna att dollarn står i 6:-, så blir det 366:-/st + ev. moms + frakt som går på ca 180:-.
Så totalt blir det minst 1278:- + moms och BOK.
Nu har jag satt ihop alla (fyra iaf, jag har en över i reserv ) drivarna med mitt BOK, men nåt är mysko.
http://www.cnczone.com/forums/attachmen ... 1214848727
http://www.cnczone.com/forums/attachmen ... 1214848727
http://www.cnczone.com/forums/attachmen ... 1214848727
Kan någon förklara vad som menas med nedanstående? Är det alltid 10 microsteg, så man ska räkna med 10 flera pulser vid uppsättet i Mach3 eller är det nåt annat lurigt?
Jag tycker allt går väldigt sakta. Ingen skillnad om man kör fort eller sakta, om ni förstår vad jag menar. Jag förstår tex inget av det han menar i post 17?
1: 10 microsteps per step, CPLD design.
17: Anti-resonance, morphs from microstepping to full-step at high speeds.
78: So is the microstepping built in, as in not adjustable?
82: 5) Core circuit. This is a pre-prgrammed CPLD, anti-resonance compensation circuit, precision 10-microstep sin-cos reference, 20kHz synchronous PWM current-loop motor phase control circuit (not a chopper; no squealing, grunting, whistling or hissing), smoothness adjust trimpot and microstep to full-step morphing. In essence, what makes a Geckodrive be a Geckodrive.
Hela tråden.
Om det alltid är 10 microsteg, så klarar jag inte sätta upp farten nåt i Mach3. Om jag gångar det med 10, så sätts det tillbaka till nåt maxvärde.
Vad gör jag för fel?
Edit:
Hittade mera, men fattade tyvärr inget mera.
Jag kan inte sätta så höga värden i Mach3.
471
474
Edit2:
Nu har jag hittat ut av det. När man ändrar Kernel Speed, så måste man avsluta Mach3 å starta på nytt. Så nu när jag satte upp 60KHz, så kan jag köra vansinnigt fort. Det blev lite skillnad nu ja.
) drivarna med mitt BOK, men nåt är mysko.http://www.cnczone.com/forums/attachmen ... 1214848727
http://www.cnczone.com/forums/attachmen ... 1214848727
http://www.cnczone.com/forums/attachmen ... 1214848727
Kan någon förklara vad som menas med nedanstående? Är det alltid 10 microsteg, så man ska räkna med 10 flera pulser vid uppsättet i Mach3 eller är det nåt annat lurigt?
Jag tycker allt går väldigt sakta. Ingen skillnad om man kör fort eller sakta, om ni förstår vad jag menar. Jag förstår tex inget av det han menar i post 17?
1: 10 microsteps per step, CPLD design.
17: Anti-resonance, morphs from microstepping to full-step at high speeds.
78: So is the microstepping built in, as in not adjustable?
82: 5) Core circuit. This is a pre-prgrammed CPLD, anti-resonance compensation circuit, precision 10-microstep sin-cos reference, 20kHz synchronous PWM current-loop motor phase control circuit (not a chopper; no squealing, grunting, whistling or hissing), smoothness adjust trimpot and microstep to full-step morphing. In essence, what makes a Geckodrive be a Geckodrive.
Hela tråden.
Om det alltid är 10 microsteg, så klarar jag inte sätta upp farten nåt i Mach3. Om jag gångar det med 10, så sätts det tillbaka till nåt maxvärde.
Vad gör jag för fel?
Edit:
Hittade mera, men fattade tyvärr inget mera.
Jag kan inte sätta så höga värden i Mach3.
471
474
Edit2:
Nu har jag hittat ut av det. När man ändrar Kernel Speed, så måste man avsluta Mach3 å starta på nytt. Så nu när jag satte upp 60KHz, så kan jag köra vansinnigt fort. Det blev lite skillnad nu ja.
Senast redigerad av jojje 6 juli 2008, 14:42:08, redigerad totalt 1 gång.
-
MadModder
- Co Admin
- Inlägg: 31619
- Blev medlem: 6 september 2003, 13:32:07
- Ort: MadLand (Enköping)
- Kontakt:
Om du har 200 helsteg per varv, blir det 2000 pulser med 10 mikrosteg.
Stigningen på M10 är väl 1,5mm?
Vi säger att du vill köra med 2500mm/min.
Det blir över 55000 pulser per sekund. Du får öka på kernel speed och starta om Mach3 så alla pulser hinns med...
Med 25000Hz kan det inte bli mer än lite drygt 1000mm/s då.
[edit]la till "starta om" också.
Stigningen på M10 är väl 1,5mm?
Vi säger att du vill köra med 2500mm/min.
Det blir över 55000 pulser per sekund. Du får öka på kernel speed och starta om Mach3 så alla pulser hinns med...
Med 25000Hz kan det inte bli mer än lite drygt 1000mm/s då.
[edit]la till "starta om" också.
Senast redigerad av MadModder 6 juli 2008, 14:49:34, redigerad totalt 2 gånger.
-
limpan4all
- Inlägg: 8476
- Blev medlem: 15 april 2006, 18:57:29
- Ort: Typ Nyköping
Såvitt jag kan se och läsa är den hårdkodad för 10microsteg dvs med en 1,8 gradersmotor så är det 2000 "step" /varv på motorn.
Men då stämmer inte 471 något vidare, det skulle ju innebära att han bara har ca 4 steg på stegmotorn dvs en ca 90 graders motor...
EDIT: Jag måste vara dum i huvet! 200steg/varv=2000microsteg per varv=150varv/ SEKUND vilket ger 9000RPM, så 471 stämmer...
Men då stämmer inte 471 något vidare, det skulle ju innebära att han bara har ca 4 steg på stegmotorn dvs en ca 90 graders motor...
EDIT: Jag måste vara dum i huvet! 200steg/varv=2000microsteg per varv=150varv/ SEKUND vilket ger 9000RPM, så 471 stämmer...
Senast redigerad av limpan4all 7 juli 2008, 12:06:33, redigerad totalt 1 gång.
Passa på nu om ni vill få tag i några G251'or. Under en kort period (till 6:e september) säljs dom för $37 isf $69 per styck vid antal upp till 6 st.
Direktlänk.
Direktlänk.
Både och.... Det är väl inget som skriftligen står någonstans (utom i forum-inlägg från Mariss). Men, dom kallar det för One time stuff happens och vill/kräver att man skickar in produkten tillsammans med en utförlig beskrivning av vad/hur man gjorde för att döda den - om den går att reparera gör dom det - gratis. Om inte får man en ny - EN gång.
Som sagt, inget som står i deras försäljnings/garanti vilkor men så verkar det vara - jag har aldrig behövt prova dock, mina G201'or har snurrat sedan 2001. Hurvida det gäller G250/G251 sålda till introduktionspris vet jag inte
Som sagt, inget som står i deras försäljnings/garanti vilkor men så verkar det vara - jag har aldrig behövt prova dock, mina G201'or har snurrat sedan 2001. Hurvida det gäller G250/G251 sålda till introduktionspris vet jag inte
Jag har tänkt att bygga en ny fräs eller bygga om en befintlig fräs framöver.
Jag kan återkomma om detta.
Enligt tips här ovan kan man köpa Gecko-kort (6 st) billigt just nu.
Priserna gäller ju bara någon dag till så det blir snabba beslut.
Jag tänkte slå till på detta. De kan väl alltid säljas vidare om de inte passar.
Min fråga är: Vad behövs mellan parallellporten och dessa gecko-kort.
Jag antar att det behövs någon sorts breakoutbox, men jag hittar ingen sådan
på geckodrive.com. Passar det korten som säljs på bergan.se?
Jag kan återkomma om detta.
Enligt tips här ovan kan man köpa Gecko-kort (6 st) billigt just nu.
Priserna gäller ju bara någon dag till så det blir snabba beslut.
Jag tänkte slå till på detta. De kan väl alltid säljas vidare om de inte passar.
Min fråga är: Vad behövs mellan parallellporten och dessa gecko-kort.
Jag antar att det behövs någon sorts breakoutbox, men jag hittar ingen sådan
på geckodrive.com. Passar det korten som säljs på bergan.se?
