Coco daiquiri
About the Coco daiquiri PCB
Coco daiquiri is an open source PCB design by qbancoffee, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 22.5 × 41.1 mm, with 18 components from 16 distinct parts.
Other key parts include the C7339, C7655, C160466 and C353035. By type, the board carries 12 resistors, 4 ICs, 1 connector and 1 capacitor.
From the project
A board that replaces the functionality of the SC77526 DAC chip in the Tandy CoCo's
- View PDF version of the schematic - How to order from JLCPCB
This board replaces the functionality of the SC77526P DAC chip found in the Tandy CoCo's. The DAC chip is one of the custom linear integrated circuits used in the Color Computer 2 and 3. As its name implies, it contains a Digital to Analog Converter. This chip also contains a sound multiplexer and the circuitry necessary to interface the joystick controllers to the microprocessor.
Main components on the Coco daiquiri
Coco daiquiri bill of materials (BOM)
18 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C7339 CD4052B | HTSSOP-16-1EP_4.4x5mm_P0.65mm_EP3x3mm | U1 |
| 1 | C7655 74LS367 | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | C160466 LM393 | TSSOP-8_4.4x3mm_P0.65mm | U3 |
| 1 | C353035 TS5A3166DBVR | SOT-23-5 | U4 |
| 1 | CONN_02X10_COUNTER_CLOCKWISE Conn_02x10_Counter_Clockwise | DIP-20_W7.62mm_Socket | J1 |
| 1 | C1798 20pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | C25803 100K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | C17629 330K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | C22813 160K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 2 | C17840 82K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5 |
| 1 | C12447 40.2K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | C17616 300K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | C4328 20K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 2 | C17414 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10 |
| 1 | C26108 10M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11 |
| 1 | C17513 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12 |
Coco daiquiri design files
The KiCad project lives in the qbancoffee/coco_daiquiri repository on GitHub; these links point at the commit this page was built from.
Coco daiquiri: common questions
How big is the Coco daiquiri PCB?
The Coco daiquiri measures 22.5 × 41.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Coco daiquiri?
18 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Coco daiquiri design files?
From the qbancoffee/coco_daiquiri repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Coco daiquiri design in my own project?
Yes, under the terms of its GPL-3.0 license, which qbancoffee chose for the repository.