Readiness: NASA JPL Open Source Rover
Verdict: Ready with caveats · 2026-07-19 · est. parts cost $1,250–$1,480
The project is largely implementable using primary distributors. This is a cold check baseline. The principal caveat is the Molex Super-SABRE header (1726750613), which is out of stock at all major authorized distributors with a 36-week lead time. Secondary stock exists at specialized vendors, but this is a high-current bottleneck for the Motor Board. One 2-position female header is out of stock but has a verified drop-in substitute.
Action required
| Part |
Problem |
Recommended action |
| 1726750613 |
Out of stock at major distributors (36-week lead time). |
Source from specialized distributors like JAK Electronics ($2.37) or NextWarehouse ($7.67). |
| PPTC021LFBN-RC |
Out of stock at DigiKey (11-week lead time). |
Use Samtec SSW-102-01-T-S (verified substitute). |
Parts
Electronics Bill of Materials
1. Integrated Circuits and Semiconductors
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| MIC2937A-3.3WT |
TO-220-3 |
Active |
360 |
$3.02 |
DigiKey |
| 2N3906TA |
TO-92-3 |
Active |
4,779 |
$0.27 |
DigiKey |
| STPS10L25D |
TO-220AC |
Active |
1,784 |
$2.51 |
DigiKey |
| 1N4148 |
DO-35 (Axial) |
Active |
997,222 |
$0.10 |
DigiKey |
2. Discrete Passive Components (Commodity)
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| CF14JT series |
Axial 1/4W 5% |
Active |
>500k |
~$0.10 |
DigiKey |
| CF18JT68R0 |
Axial 1/8W 5% |
Active |
27,285 |
$0.10 |
DigiKey |
| C317C103K5R5TA7301 |
10nF Ceramic |
Active |
43,449 |
$0.35 |
DigiKey |
| C322C104K5R5TA7317 |
0.1µF Ceramic |
Active |
22,727 |
$0.94 |
DigiKey |
| ESK series (100µF) |
Radial Elect. |
Active |
High |
— |
DigiKey |
| ESK106M050AC3AA |
10µF Elect. |
Active |
31,769 |
$0.17 |
DigiKey |
3. Connectors and Electromechanical
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| DC10CGKWA |
10-Seg Bar Graph |
Active |
863 |
$4.69 |
DigiKey |
| TSW-104-07-F-T |
3x4 Header |
Active |
227 |
$1.04 |
DigiKey |
| PEC08SAAN |
8-pos Male Hdr |
Disc. |
8,609 |
$0.82 |
DigiKey |
| PPTC102LFBN-RC |
20-pos Fem Hdr |
Active |
4,295 |
$1.32 |
DigiKey |
| SBH11-PBPC-D20-ST-BK |
40-pos Shroud |
Active |
34,036 |
$0.66 |
DigiKey |
| B6B-PH-K-S(LF)(SN) |
6-pos JST 2mm |
Active |
25,249 |
$0.27 |
DigiKey |
| 0702462001 |
20-pos Shroud |
Active |
6,971 |
$3.09 |
DigiKey |
| PPTC021LFBN-RC |
2-pos Fem Hdr |
OOS |
0 |
— |
DigiKey |
| OSTTA024163 |
2-pos Term Blk |
Active |
37,548 |
$0.72 |
DigiKey |
| 1726750613 |
Super-SABRE Hdr |
OOS |
0 |
$2.37 |
JAK Electronics |
| EDSTL130/24 |
24-pos Term Hdr |
Active |
12,821 |
$4.73 |
DigiKey |
| 0395016006 |
6-pos Term Hdr |
Active |
9,385 |
$2.46 |
DigiKey |
| 0395005006 |
6-pos Term Plug |
Active |
9,626 |
$3.07 |
DigiKey |
| 206-124 |
SPDT 4-pos DIP |
Active |
6,087 |
$2.34 |
DigiKey |
| C3920BAAAA |
Toggle Switch |
Active |
818 |
$10.30 |
DigiKey |
| 696108003002 |
Fuse Clip |
Active |
28,283 |
$0.64 |
DigiKey |
| 0233010.MXP |
10A Glass Fuse |
Active |
1,360 |
$1.56 |
DigiKey |
4. External Modules and Major Components
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| Raspberry Pi 5 |
Controller Plat. |
Active |
High |
$59.99 |
Micro Center |
| Roboclaw 2x7A |
Motor Controller |
Active |
High |
$75.00 |
Basic Micro |
| Pololu #2881 |
5V Regulator |
Active |
High |
$18.95 |
Pololu |
| Pololu #2855 |
12V Regulator |
Active |
High |
$29.95 |
Pololu |
| INA260 (#4226) |
Power Monitor |
Active |
High |
$9.95 |
Adafruit |
| PCA9685 (#815) |
Servo Driver |
Active |
High |
$14.95 |
Micro Center |
| DC Power Meter |
Generic LCD |
Active |
High |
$12.50 |
DROK |
Mechanical and Ecosystem Dependencies
1. Drivetrain and Motors
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| 5203-2402-0027 |
Drive Motor |
Active |
High |
$54.99 |
goBILDA |
| 2000-0025-0002 |
Steering Servo |
Active |
High |
$36.99 |
ServoCity |
| 3202-0001-2501 |
ServoBlock |
Active |
High |
$34.99 |
RobotShop |
| 3616-0014-0144 |
Wheels |
Active |
High |
$24.99 |
goBILDA |
2. Structural Ecosystem (goBILDA)
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| Hurricane Nuts |
Proprietary |
Active |
High |
— |
goBILDA |
| Hyper Hubs |
8mm REX bore |
Active |
High |
— |
goBILDA |
| Pillow Blocks |
32mm bore |
Active |
High |
— |
goBILDA |
3. Power and Battery
| Part |
Spec/Package |
Status |
Stock |
Price |
Source |
| 4S LiPo Battery |
14.8V 5000mAh |
Active |
High |
$53.99 |
Walmart |
| XT30 Connectors |
Male/Female |
Active |
High |
— |
Commodity |
Substitutes
| For part |
Substitute |
Differences |
Verified |
Judgment |
| PPTC021LFBN-RC |
SSW-102-01-T-S |
Drop-in replacement. |
Package + pitch + mounting |
Acceptable |
Instructor: verify any substitute against its datasheet before ordering.
Other dependencies
- PCB Fabrication: Requires Gerbers for "Brain Board" and "Motor Board" (v2.0.2); 1.6mm FR-4, 1oz copper. Status: not checked.
- Chassis Plates: Requires laser cutting 3mm (1/8") Acrylic or MDF using provided .dxf files. Status: not checked.
- Software Dependencies: Python libraries for PCA9685 and Roboclaw serial communication; Raspberry Pi OS. Status: available (pip).
- Assembly Tools: M4 hex keys (2.5mm, 3mm), 7mm nut driver, crimpers for JST PH/Molex Super-SABRE. Status: checked (readily available).
Watch list
- 1726750613 (Molex Super-SABRE): Global stockout at primary distributors; 36-week lead time makes Motor Board assembly difficult without secondary sourcing.
- PEC08SAAN: Marked as discontinued at DigiKey; while male headers are common, specific stock levels for this MPN are dwindling.
- goBILDA Proprietary Hardware: The hurricane nuts and hubs are ecosystem-specific; any stockouts at goBILDA will halt chassis assembly as they are not easily substituted with standard hardware.