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Forum Index : Microcontroller and PC projects : Colour Maximite Bill of Materials issues
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| gordonf Newbie  Joined: 17/01/2024 Location: United StatesPosts: 5 |
I'm looking to construct the original Colour Maximite: ColourMaxBOM-Draft.zip This is incomplete. The ZIP has a single CSV file. I'm having trouble matching up some of the needed parts to Digikey's catalogue. And ultimately I want to send this and the Gerbers to the likes of PCBway to just build them for me. The caps and resistors in the parts list from the CMM construction kit's parts list doesn't list what C or R parts go where. I can probably figure that from the schematic though. I'd also like to try to substitute the one remaining surface-mount capacitor with a through-hole one, but that can come later. First I want to just see if I can construct these things. Has anyone ordered CMM parts from Digikey in the USA before? I think I'm missing something fundamental, and I suspect I've severely mismatched some of the caps. I haven't even gotten to the resistors. -- Just some hoser working on systems from the 1980s. https://youtube.com/@greatwhiteretro |
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 6790 |
Is Geoff's site of any use to you? There's a parts list in the Construction Pack. Edited 2024-01-18 04:52 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| gordonf Newbie Joined: 17/01/2024 Location: United StatesPosts: 5 |
I got the parts list from Geoff's site. This is where I'm trying to build the Digikey BOM from, and where I think I might be picking the wrong versions of some parts. Some of the capacitors for instance were for automotive use, and much larger than for use on a small PCB like this. Geoff himself recommended I join this forum since he doesn't have a North American distributor yet. -- Just some hoser working on systems from the 1980s. https://youtube.com/@greatwhiteretro |
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| gordonf Newbie Joined: 17/01/2024 Location: United StatesPosts: 5 |
Here's a completed, shared, cart from Digikey: https://www.digikey.com/short/5rm4bpnb Here's a CSV copy: CMM-Digikey-BOM-draft2.zip I'm going to spend another evening re-reviewing this to make sure I match the component locations on the board to all of these parts. All together this is a pretty pricy kit at US$66.21, and this isn't including the cost of the board (about US$10.00) and my labor assembling and programming the PIC32. I also have to pick up a programmer tool. Once I'm sure all of the parts are close enough, I'll make the assembly attempt. I already have bare boards coming, even if I end up using them as art pieces. Already have some solder paste for surface mounted parts and some tools. I'm no TexElec, but maybe I can make one work. After that maybe PCBWay can build them for me, or I could post it to their shared projects site or something, assuming there already isn't an example posted there. -- Edited 2024-01-18 10:44 by gordonf Just some hoser working on systems from the 1980s. https://youtube.com/@greatwhiteretro |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
If you have an Arduino Nano or MicroMite2 Pic32 chips can be programmed using Pic32prog.EXE. On TassyJim's MMEdit site there is MMFlash which adds a Windows interface and has all needed files and instructions. More info. by searching TBS. |
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| toml_12953 Guru Joined: 13/02/2015 Location: United StatesPosts: 339 |
I have seen cases where DigiKey has changed a part number and reused the old number for a different part. It can get hairy. Sometimes, you have to search on the specs of the part you're looking for rather than the part numbers. |
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| gordonf Newbie Joined: 17/01/2024 Location: United StatesPosts: 5 |
After rechecking again I found a few issues and corrected them. In this shared Digikey cart I added the component numbers from the Colour Maximite schematic as customer reference entries: https://www.digikey.com/short/vmb3zfdw I think everything is here except the board and the case. I substituted the one surface mount cap with a through-hole version, but I think I can hack this cap on there for a test build. -- Just some hoser working on systems from the 1980s. https://youtube.com/@greatwhiteretro |
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