Bob Teaches Tech — Engineering Content Built Like a Control Panel

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Engineering content built like a control panel:
tested, labeled, working.

Practical tutorials in PLC programming, industrial automation, mechatronics, and embedded systems — written by an engineer who builds the systems before he writes about them.

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PROG: MAIN FILE 2 — LAD 2 RUNGS: 4 L1 L2 0 I:1/0 START PB I:1/1 STOP PB O:2/0 MOTOR RUN O:2/0 seal-in 1 O:2/0 RUN INLK Timer On-Delay Timer T4:0 Time Base 1.0 s Preset 5 2 T4:0/DN TMR DONE I:1/2 SENSOR IN O:2/1 ALARM 3 I:1/3 E-STOP I:1/4 RESET OSR O:2/7 FAULT RST NO NC Coil TON Timer OSR OTU Rung 0: Motor start/stop · Rung 1: TON timer · Rung 2: Alarm · Rung 3: Fault reset
Ladder Logic
PROG: MAIN FILE 2 — LAD 2 RUNGS: 4 L1 L2 0 I:1/0 START PB I:1/1 STOP PB O:2/0 MOTOR RUN O:2/0 seal-in 1 O:2/0 RUN INLK Timer On-Delay Timer T4:0 Time Base 1.0 s Preset 5 2 T4:0/DN TMR DONE I:1/2 SENSOR IN O:2/1 ALARM 3 I:1/3 E-STOP I:1/4 RESET OSR O:2/7 FAULT RST NO NC Coil TON Timer OSR OTU Rung 0: Motor start/stop · Rung 1: TON timer · Rung 2: Alarm · Rung 3: Fault reset
Core Areas Section
CORE AREAS

Four disciplines, one workflow.

Every tutorial sits inside a category built around how automation systems actually get designed and commissioned. Click a card to browse that category.

Industrial robotic arm in an automated production line

Mechatronics & Robotics

Sensors, actuators, and motion control for real mechanical systems.

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PLC control cabinet with wiring and terminal blocks

PLC Programming

Ladder logic, FBD, and structured text across all major PLC platforms.

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Engineer monitoring an industrial HMI and SCADA screen

Industrial Automation

SCADA, HMI design, IIoT integration, and plant networking.

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Close-up of a populated electronic circuit board

Embedded & Power Systems

Microcontrollers, gate drives, and power electronics fundamentals.

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Bob Odhiambo

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ABOUT

Bridging engineering theory and the factory floor.

Bob Teaches Tech is built and written by Bob Odhiambo, a mechatronics and automation specialist with hands-on experience programming and commissioning PLCs across multiple platforms, along with industrial communication protocols and variable frequency drives.

Every tutorial here is tested against real hardware before it's published — not adapted from a datasheet. Bob also contributes technical writing to EEPower and Control.com.

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