3-Axis Programmable Selective Soldering Robot
By Hemang Joshi · Founder, hjLabs.in · Bachelor of Engineering in Electrical Engineering · Published July 25, 2026
A programmable 3-axis selective soldering robot for modern PCB assembly. 180x240mm T-slot work bed, 0.01 mm axis repeatability, temperature-controlled iron (90-480 C), automatic solder-wire feeder, and touch-screen pendant with jog dial. WiFi + wireless OTA firmware updates. Control from the karmyogi.hjlabs.in web app. Made in Gandhinagar, India.
Technical Specifications
| Work Bed | 180 x 240 mm T-slot (custom sizes on request) |
| Repeatability | 0.01 mm (X / Y / Z) |
| Throughput | 3,000 - 5,000 solder points per hour |
| Iron Temperature Range | 90 - 480 °C (temperature-controlled) |
| Solder-Wire Feed | Automatic feeder, programmable feed rate |
| Approach Angles | 4 x 45° plus 90° plunge (programmable per point) |
| Programming | Touch-screen pendant with jog dial (teach & play) |
| Program Storage | On-board SD card — auto-recall after power loss |
| Operator Controls | Play / Pause / Stop plus hands-free foot pedal |
| Connectivity | WiFi (2.4 GHz) — controlled from karmyogi.hjlabs.in |
| Firmware Updates | Wireless OTA — no USB required |
| Controller | Industrial-grade, stepper-driven X/Y/Z |
| Warranty | 1 Year (parts + labour) |
| Country of Origin | India (Gandhinagar, Gujarat) |
Built for Precision
0.01 mm repeatability
Repeatable X, Y and Z positioning — measured, not marketing.
Industrial steppers
Closed-loop stepper drives sized for 24/7 production duty.
180 x 240 mm T-slot bed
Clamp any PCB, jig, or battery pack directly to the aluminium table.
3,000 - 5,000 pts/hr
Sustained throughput on real production BOMs.
Custom bed sizes
Larger boards? Request a bespoke bed at quote.
Smart Soldering Head
- Temperature-controlled iron — 90-480 °C, covers lead-free (SAC305), leaded, and low-temp alloys.
- Automatic solder-wire feeder — programmable feed rate and per-point volume.
- Programmable approach — four 45° angles plus a 90° plunge, chosen per solder point to clear tall components and reach recessed pads.
- Tip cleaner and fume path integrated with the head assembly.
Program & Control
Touch-screen pendant
Familiar interface with a jog dial for precise point teaching.
Teach & play
Jog to a solder point, save; repeat. No CAD import needed.
SD card storage
Load, save, and version programs on removable SD.
Power-loss memory
Settings and the loaded program persist after power-off.
Play / Pause / Stop
Full run-time control from the pendant.
Foot pedal
Hands-free start / pause for two-hand fixturing.
Connected & Upgradable
- Web app control — drive the machine from karmyogi.hjlabs.in.
- WiFi enabled — ready for factory IoT dashboards and MQTT hooks.
- Wireless OTA firmware — ship features and fixes without a USB cable.
- Industrial-grade controller and pendant — built for shop-floor conditions.
Applications
Where our 3-axis selective soldering robot replaces inconsistent hand soldering on the shop floor.
Product Description
The 3-Axis Programmable Selective Soldering Robot from hjLabs.in is engineered for shops that have outgrown hand soldering but do not want to spend ₹40 lakh on a full reflow line. It brings 0.01 mm axis repeatability, a 180 x 240 mm T-slot work bed, and a temperature-controlled iron (90-480 °C) with an automatic solder-wire feeder into one benchtop cell.
Selective soldering, teach-and-play
You do not need a CAD import or a robotics tech. Jog to a solder point with the touch-screen pendant's jog dial, save it, and the machine remembers the tip position, dwell time, wire volume, and approach angle. Programs are stored on an on-board SD card and reload automatically after a power cut — no lost programming.
Approach angles that clear tall components
Where a two-axis machine can only plunge straight down, this robot's head is programmable to four 45° approach angles plus a 90° plunge per point. That lets you solder pads recessed under connectors, next to tall capacitors, or on the bottom of a shielded module — joints that hand-soldering shops usually re-route to rework.
WiFi, OTA firmware, and web-app control
The machine is WiFi-enabled and controllable from the karmyogi.hjlabs.in web app — queue programs, monitor cycle time, and push firmware updates over-the-air. No USB cable, no rebooting into DFU mode.
Where it fits on your shop floor
Ideal for PCB assembly houses, EMS/ODM shops, battery pack builders, IoT sensor assemblers, and R&D labs shipping small-to-mid volumes. Pairs naturally with our AutoSolder 6 for high-throughput point soldering and the AutoCut V2 Wire Cutter for a complete wire-to-board cell. For a bespoke variant — larger bed, dual heads, conveyor — talk to us via Custom Automation Solutions.
Frequently Asked Questions
Need a Custom Configuration?
Larger bed, dual heads, integrated conveyor, or a specific fixturing plate for your board — we build custom selective soldering variants.
Contact Us for Custom Enquiry